Machine for assembling container parts



July 4, 1933. 5 PAGE 1,916,281

MACHINE FOR ASSEMBLING CONTAINER PARTS Filed Dec. 20, 1930 4 Sheets-Sheet l ATTORNEYS July 4, 1933. J. E. PAGE 1,916,281

MACHINE FOR ASSEMBLING CONTAINER PARTS Filed Dec. 20, 1930 4 Sheets-Sheet 2 INVENTOR ATTORNEYS July 4, 1933. J. 5 E 1,916,281

MACHINE FOR ASSEMBLING CONTAINER PARTS Filed Dec. 20, 1930 4 Sheets-Sheet 3 INVENTOR J4? f/W Z2704.

ATTORNEYS July 4, 1933. J. E. PAGE 1,916,281

MACHINE FOR ASSEMBLING CONTAINER PARTS Filed Dec. 20, 1930 4 Sheets-Sheet;

INVENTOR m a BY M ATTORNEYS Fatentecl July 4, 1933 UNITED STATES PATENT OFFICE JOHN ERNEST PAGE, OF SYDNEY, HEX/V SQUTH W'ALES, AUSTRALIA, ASSIGNOR TO THE GUARDIAN TRUST CGIYEPANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO, AS FGR THE GIBSQN PATENT COITTATF'EES, L'ill, A COR'PORATION OF NEW SOUTH WALES, AUSTRALIA FIAGHINE FOR ASSEMBLING CONTAINER PARTS Application filed December 20, 1930. Serial No. 503,694.

The invention relates to box-making machinery and more particularly to a device for turning in the wrapping in composite paperboard boxes. 1

The invention comprises a machine for assisting in assembling a box which may comprise, in one form, an annular side wall having inturned members at its end, an end wall underlying the inturned members and a wrapping of flexible sheet material surround ing the end wall and side wall and tucked within the box, an insert disc being provided to firmly hold the tucked-in wrapping against the side wall and end wall of the box.

According to a preferred form of the invention, the machine may comprise a table supporting a turning-in device having an opening corresponding to the shape of the box and supporting a plurality of inwardly extending spring urged turning-in members. A plunger is provided above the table and is adapted to carry the side wall of the box together with the end wall and superimposed wrapping through the turning-in device into a receiving pan underneath the table. When the plunger is withdrawn the spring members turn in the edges of the wrapping and upon the upward movement of the pan the spring members tuck the wrapping down into the inside of the box. The pan may be slid out from under the table and a disc may be inserted to form a false bottom for the box and to hold the tucked-in wrapping firmly against the side wall and end wall of the box.

The turning-in device may be of any shape corresponding to the desired shape of box, such as circular, triangular, octagonal, etc. Similarly, the plunger and the pan will be of a shape corresponding to the shape of the box.

The invention also consists in certain new and original features of construction and combinations of parts hereinafter set forth and claimed.

Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to its objects and advantages, and the manner in.

which it may be carried out, may be better understood by referring to the followlng description taken in connection with the accompanying drawings forming a part thereof, in which:

Figs. 1 and 2 are side elevation and bottom plan view, respectively, of one form of turning-in device;

Figs. 3 and d aresections taken on the lines 3-3 and l-4, respectively, of Fig. 2;

Fig. 5 is a perspective of one form of box assembled by the machine;

Figs. 6 and 7 are a side elevation and bottom plan view, respectively, of a dili'erent form of turning-in device;

Fig. 8 is a section on the line 88 of Fig. 7;

Fig. 9 illustrates diagrammatically the machine with which the turning-in device is used; and

Fig. 10 is a detail showing the finished box before it is removed from the pan.

in the following description and in the claims parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit. I

Like reference characters denote like parts in the several figures of the drawings.

In the drawings accompanying and forming part of this specification, practical commercial embodiments of the invention are shown, but as such illustrations are primarily for purposes of disclosure, it ill be understood that the structures may be moditied in various respects without deparmre from the broad spirit and scope of the invention as hereinafter defined and claimed.

Referring now to the drawings and more particularly to Figs. 5 and 10, one form of box which may be made by the machine will first be described to aid in better understanding the invention. The box or cover which is indicated by 21 comprises a sidewall 22 havin projecting portions 23 bent inwardly at its lower edge. It will be understood that the side wall 2:2 is made from a strip of paperboard suitably glued or otherwise secured at its ends to form an annular wall, as shown.

Underneath the projections 23 is the end wall 24 and surrounding both end wall and side wall is a wrapping of soft flexible sheet material such as paper or cellophane indicat- 3 ed by 25. This wrapping 25 is tucked within the open end of the box 21 an d. an insert (7 i 27 is tightly pushed into the box to hold the tucked-in portion 26 of the wrapping in posit on against the bottom wall 24 and projections 23.

Referring now to Fig. 9, the machine for assembling the box just described, as shown, comprises a table 32 having an annular seat 38 upon which rests a fiat ring" 33 of a tu ning-in device. The turningin device has an opening corresponding to the shape of l ie box, in this case be triangular with rounded corners. Depending from the ring 33 are spring pressed members 34 and which are yieldably urged inwardly. The construction of the turning-in device will be described more in detail hereinafter.

Above the table 32 is a plunger having an enlarged end 31 corresponding to the shape of the opening and under the table 32 is a pan 2O resting upon a suitable support 120 and corresponding in shape to the box to be made. It will be noted that the ring 33 held in its seat 38 by a plurality of setscrews 39.

To assemble a box or cover 21. the side wal 22 is first placed upon the plunger end 31, as shown, with the inwardly projecting portions 23 against the bottom of the plunger. A sheet of wrapping 25 is laid on the ring and the bottom wall of the box on top of the wrapping 25. The plunger 30 is then caused to move downwardly by suitable hand or power means (not shown) carrying the side wall 22, the bottom wall 24 and wrapping 25 through the turning-in device, forcing the spring-pressed members 34 and outwardly and carrying the box parts into the pan 20.

The plunger 30 is then withdrawn and the spring-pressed members 34 and gradually contract, turning over the edge of the wrapping 25, the box in this condition being somewhatas indicated by the dot-and-dash lines, in the pan 20. The. support 120 is then caused to move upwardly either by suitable hand or power means (not shown) and the turnin g-in members 34 and 35 tuck the edge of the wrapping 25 into the cover 21.

The support 120 is then withdrawn and the pan 20 may be slid laterally and the disc insert 27 placed in position by hand, holding the tucked-in portion 26 of the wrapping tightly between the disc 27 and the parts 23 and 24 of the box.

It will be understood that the machine may be used for placing the wrapping of flexible sheet material around any cover made in any well-known way. The sheet material will simply be placed, for example, on the ring and the cover on the plunger 30 Operation of the machine as above described will wrap the sheet material around the cover and a Aim .similar to the disc 27 will be inserted in the cover to hold the tucked-in edges of the sheet material in place.

Referring now to Figs. 1 to 4, inclusive, the turning-in device shown comprises the flat ring 33 having triangular opening 55 with rounded corners as shown. The springpressed turning-in members 34 are straight, having their ends slightly rounded and the turning-in members 35 are curved.

At each corner of the opening 55 is a pair of supports 42 secured thereto. Secured to each straight member 34 is a pair of hinge members through which the pintle 41 extends, this pintle being housed in the sup ports 42 at its ends.

The curved members 35 are secured to curved bars having recesses 52 therein. Pins indicated by 51 connect the bars 50 with the supports 42 of each pair. It will be noted that reces'es are cut in the ends of the straight members 34 to provide clearance for the curved members 35 and forming, in effect, lugs 43.

A pair of leaf springs 44 and 45 are provided for each straight member 34, being secured to the ring 33 by screws 46. The inner spring 44 is curved at its end so that it can ride on straight member 34 as this member pivots about pintle 41.

S-shaped leaf springs 53 are provided. to yiel-dably urge curved members 35 inwardly. One end of these springs is connected to the ring 33 by screws 54 and the free ends rest in the recesses 52 of the curved bars 50.

Thus, the straight members 34 and curved members 35 closely fit the box as it is pushed therethrough, uniformly holding the wrapping tight so that a neat Job is done. All parts are rounded so that there is no chance of tearing the wrapping or mutilating the box.

Referringnow'to Figsb, 7 and 8, a turningin device is shown for making a circular box. This device comprises a fiat plate having a circular opening 61 and having a plurality of spring fingers 68 depending from the plate.

Each finger GS is made from spring material and comprises a straightbody portion 62 having a curved head 63 the bottom and an outwardly projecting attaching portion 64 at the top which suitably clamped between rings 65, as shown. The spring finger (38 is further bent upwardly from the head 63 to form an outwardly bowed member 66. A ring 67 which is yieldable lengthwise of itself and shown in the form of a coil spring passes through the beads 63 of all the fingers 68.

It will be seen that, when the box is passed through this'device in the manner described above, a large number of yieldable fingers 68 will hold the wrapping tightly against the side of the box, making a neat job without tearing the wrapping in any way. It will he noted that there are no sharp corners porting ring which can come into contact with the box and hence there is no likelihood ofthe box becoming damaged during the process of manufacture. a

Thus, a machine for assisting in assembling box covers of the type described above has been provided which will give satisfactory operation over long periods oi: time. There are no parts to get out of order and provision is made that all parts of the periphery of the box are gripped. uniformly by the fingers so that the wrapping will be tightened to just the proper extent uniformly around thebox. Boxes which are curved to shapes other than round,'such as oval and elliptical, may be made with a turning-in device similar to that disclosed in Figs. 6, 7 and 8. ,On the other hand, straight sided boxes such as square boxes, pentagonal boxes, hexagonal boxes, etc., will probably be made using turning-in devices similar to that illustrated in Figs. 1 to a, inclusive. 7

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that Various omissions, substitutions and changes may be made by those skilled in the art without departing from the spirit of the invention.

What is claimed is:

1. A turning-in device comprising a suphaving a substantially straight sided opening, substantially straight turn-' ing-in members one for each side and pivoted between said corners, curved corner turning-in members within said straight turning-in members and located at the corners, and means independently urging each of said members inwardly.

2. A turning-in device comprising a supporting ring having a straight sided opening rounded at the corners, a pair of depending supports across each corner of said opening, straight turning-in members one for each side and pivoted between said corners to adjacent supports of each pair, curved corner turning-in members within said straight turning-in members and located at the corners, said straight members having recesses.

at their ends to clear said curved members, a leaf spring behind each straight member urging it inwardly, said corner members comprising a curved blade and a curved bar having a recess, said bar being pivoted between a pair of corner supports and supporting said blade, and S-shaped leaf springs secured to said ring and having their vfree ends in said recesses.

3. A turning-in device comprising a supporting ring, a plurality of annularly arranged fingers, each finger comprising a strip of spring material having a straight depending body bent at its upper end toform an outwardly projecting attaching part and bent at its lower end to form a bead and an upwardly extending outer outwardly bowed member extending substantially the length of said body, and means securing said attaching parts to said supporting ring.

4. A turning-in device comprising a supporting ring, a plurality of circularly arranged fingers, each finger comprising a strip of spring material, having a substantially straight depending body bent at its upper end to form an outwardly projecting attaching part and bent at its lower end to form a bead and an upwardly extending outer outwardly bowed member extending substantially the length of said body, and a second ring of material yieldable lengthwise of said second ring disposed in the beads of said fingers, and clamping devices for clamping said attaching parts to said supporting ring.

5. A turning-in device comprising a supporting ring, a plurality of annularly arranged fingers secured to said ring, each finger comprising a strip of spring material having a body and a bead at its end, and a second ring of material yieldable lengthwise of said second ring disposed in the beads of said fingers.

6. In a machine for assembling boxes, a table having a turning-in device with an opening corresponding to the shape of the box and having depending, inwardly extending, yieldable members around the periphery of the opening, a plunger above said table having a shape corresponding to the shape of the box, a pan having a bottom and side Walls corresponding to the shape of the boX under said turning-in device, a support holding said pan so that the pan may be wit-hdrawn laterally, said plunger being adapted to move relatively to said turning-in device and pan, passing through said device into said pan, said pan being adapted to move relatively to said turning-in device to surround said inwardly extending members after said plunger is withdrawn.

7. in a machine for assembling boxes, a turning-in device with an opening corresponding to the shape of the box and having inwardly extending, yieldable members around the periphery of the opening, a plunger on one side of said device having a shape corresponding to the shape of the box, a pan having a bottom and side walls corresponding to the shape of the box on the other side of said turn-in device, a support holding said pan, said plunger being adapted to move relatively to said turning-in device and pan, passing through said device carrying a side wall, an end wall and a sheet of flexible wrapping all forming part of the box into said pan, said pan being adapted to move relatively to said turning-in device to surround said inwardly extending members after said plunger is withdrawn, said members tucking the edge of said wrapping into the interior of the box.

8. In combination, a turning-in device comprising a member having an opening, turning-in means swingably positioned around said opening, means for passing relatively work through said opening from the hinged end and means for passing relatively said turning-in means into said work.

9. In a machine for assembling boxes, :1 table having an opening t-lierethrough, inwardly extending, yieldable members surrounding the periphery of said opening, a

plunger adapted to carry part-s forming the box through said opening, a pan having a bottom and side Walls corresponding to the shape of the box and adapted to receive said my hand.

JOHN ERNEST PAGE. 

